How to Use a Mix Bus Compressor

compression

Here's one of the most a common problem I've noticed in many songs when I'm doing coaching sessions or song reviews.

The issue? Turning on the bus compressor way too early in the mix, leading to a loss of dynamism and a collapsed mix.

In this video and article, I’ll guide you on how to avoid this pitfall and how to hear compression. While I'm using Reason in the video, this still applies no matter your DAW.

The Bus Compressor: On or Off?

The master bus compressor in Reason is your friend, but only when used correctly. There's a big button that says 'On/Off' – for most of your recording and mixing process, you want to keep it OFF.

The reason?

Let’s delve into that.

Before we jump in, a quick heads up: I have a free Reason mixing template available for download. It’s packed with presets that'll speed up your process and enhance your sound quality.

The Problem with Early Compression

The main issue arises when you set your bus compressor too early. For instance, you might have your bass and drum line set and then apply compression. This seems fine until you start adding more instruments, and before you know it, you're over-compressing.

This excessive compression can trick your ear into thinking this flattened sound is how your song is supposed to sound, but in reality, it’s robbing your mix of its punch and groove.

Ideal Compressor Settings

The key to a beautiful sounding mix lies in the right compressor settings on the mix bus.

Here are the keys:

Aim for subtle compression, usually around 1 to 3 dB.
Set your ratio at 4
Always use an attack setting of 30 milliseconds.
For release settings, stick between 0.1 and 3 milliseconds, depending on your taste.
Use the threshold knob for gain reduction and the makeup knob to compensate.

You'll find that most master bus compressors have settings that make this possible. This article includes my review of the best mix bus compressors.

The Issue with Wrong Settings

If you set your compressor with the wrong settings too early, you might end up thinking your song is bad. In reality, the problem is simply that you're compressing the life out of it. That's why you don't want to turn your compressor on too early. But even if your settings are right, too much compression too soon can end up hiding the problems with your mix.

Listening to Compression

It’s important to understand what compression sounds like. Check out the video to hear what it sounds like when we crank up the compression in this video for demonstration (or better yet, experiment on your own). Pay attention to how different settings, like a 10:1 ratio or varying attack and release times, affect the sound. The goal is to maintain the punch and groove of your track without squashing it.

The Worst Setting

Please, don't ever use this setting on your master bus compressor: fast attack and slow release. You’ll notice how it completely kills the groove. The setting could be useful on other instruments, but it's a death sentence on the mix bus.

Conclusion

The takeaway here is simple: don't rush to turn on your compressor. Understand the settings and apply them thoughtfully. If you avoid early compression, your songs will maintain their dynamism and sound better throughout the mixing process.

Thanks for tuning in! Don’t forget to download the free Reason mixing template. Happy mixing!

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